Abstrak: Pupuk merupakan kebutuhan yang sangat vital bagi tanaman. Di dalam pupuk terkandung berbagai unsur hara yang sangat penting untuk mendukung pertumbuhan tanaman. Pemupukan tanaman dapat dilakukan dengan menggunakan pupuk sintetik maupun pupuk organik. Telah dilakukan penelitian tentang aplikasi pupuk organik dan pupuk NPK untuk meningkatkan pertumbuhan vegetatif melon yang bertujuan untuk mengetahui (1) pengaruh aplikasi pupuk organik terhadap pertumbuhan vegetatifmelon, (2)pengaruh aplikasi pupuk NPK terhadap pertumbuhan vegetatifmelon, (3)pengaruh interaksi pupuk organik dan pupuk NPK terhadap pertumbuhan vegetatifmelon.Dalam penelitian ini digunakan Rancangan Faktorial yang terdiri atas 2 faktor. Faktor pertama adalah dosis pupuk organik dan faktor kedua adalah dosis pupuk NPK. Perlakuan pupuk organik terdiri atas 4 level yaitu: P o = tampa pemberian pupukorganik (kontrol), P 1 = pemberian 0,5 kg pupuk organik/1 m 2 lahan, P 2 = pemberian 1,0 kg pupuk organik/1 m 2 lahan, P 3 = pemberian 1,5 kg pupuk organik/1 m 2 lahan, Selanjutnya faktor pupuk NPK terdiri atas 5 level yaitu, N 0 = tampa pemberian pupuk NPK (kontrol), N 1 = pemberian 5 gram pupuk NPK/tanaman, N 2 = pemberian 10 grampupuk NPK/tanaman, N 3 = pemberian 15 grampupuk NPK/tanaman, N 4 = pemberian 20 gr pupuk NPK/tanaman.Parameter pertumbuhan yang diukur adalahpanjang batang dan panjang daun melon, Data kuantitatif hasi pengukuran parameter di atas dianalisis dengan analisis sidik ragam.Dalam penelitian ini disimpulkan bahwa aplikasi pupuk organik berpengaruh sangat nyata terhadap pertumbuhan vegetatif melon. Aplikasi pupuk NPK berpengaruh sangat nyata terhadap pertumbuhan melon. Interaksi pupuk organik dan pupuk NPK tidak berpengaruh nyata terhadap pertumbuhan vegetatif melon.Abstract: Fertilizers are a very vital requirement for plants. Fertilizer contains various nutrients that are very important to support plant growth. Fertilizing plants can be done by using synthetic fertilizers or organic fertilizers. Research has been carried out on the application of organic fertilizer and NPK fertilizer to improve the vegetative growth of melons which aims to find out: (1) the effect of organic fertilizer on vegetative melon growth, (2) the effect of NPK fertilizer on vegetative growth of melons, (3) the effect of interaction between organic fertilizer and NPK fertilizer on vegetative melon growth. In this study a Factorial Design consisting of 2 factors was used. The first factor is the dose of organic fertilizer and the second factor is the dose of NPK fertilizer. The treatment of organic fertilizer consists of 4 levels, namely: P o = without giving organic fertilizer (control), P 1 = giving 0.5 kg organic fertilizer/1 m 2 land, P 2 = giving 1.0 kg organic fertilizer/1 m 2 land, P 3 = giving 1.5 kg of organic fertilizer/1 m 2 land, then NPK fertilizer factor consists of 5 levels, namely N 0 = without NPK fertilizer (control), N 1 = giving 5 grams of NPKfertilizer/plant, N 2 = giving 10 grams of NPK fertilizer/plant, N 3 = giving 15 grams of NPK f...
ABSTRAKPenelitian ini bertujuan untuk mengkaji ukuran rajungan yang tertangkap, menganalisis perbandingan jumlah rajungan jantan dan betina yang tertangkap, dan menganalisis karakteristik habitat (salinitas, suhu, pH, dan bentuk dasar substrat perairan) di daerah penangkapan rajungandi Dusun Ujung Lombok Timur. Jenis penelitian ini adalah penelitian diskriptif dengan menggunakan metode survai dalam pengambilan data. Parameter yang diteliti adalah parameter biologi dan ekologi rajungan. Parameter biologi yang diamati adalah jenis kelamin, dan lebar karapas, sedangkan parameter ekologi adalah suhu, salinitas, dan pH perairam serta bentuk dasar substrat. Kondisi substrat didominasi oleh fraksi pasir diikuti oleh fraksi lumpur dan fraksi liat. Hasil penelitian menunjukkan bahwa kualitas air di daerah penelitian sangat sangat layak bagi kehidupan rajungan, dengan sebaran suhu antara 29 0 C -30 0 C. Salinitas perairan di daerah penelitian berkisar dari 31 sampai 32 ppt, dan Nilai pH perairan di lokasi penelitian berkisar antara 7.2 sampai 7.5. Distribusi lebar karaps rajungan di dominasi oleh lebar diatas 100 mm baik jantan maupun betina. Proporsi lebar karapas rajungan jantan yang tertangkap dengan lebar diatas 100 mm adalah sebesar 41,7% dan betina sebesar 48,3% dari total sampel penelitian. Nisbah kelamin antara rajungan jantan dan betina adalah 0,8 : 1. Hal ini menunjukkan bahwa rajungan jantan dapat membuahi lebih dari satu rajungan betina. Kata-Kata Kunci: Bio-ekologi, diskriptif, karakteristik habitatABSTRACT This study aims to assess the size of the crabs are caught, analyzing the ratio of male and female, and analyze the habitat characteristics (salinity, temperature, pH, and form of the substrate waters) in crab fishing area in the Ujung Vilage of East Lombok District.This research is a descriptive study using survey methods in data collection.The parameters studied are biological and ecological parameters. Biological parameters measured were sex and carapace width, while the ecological parameters are temperature, salinity, and pH of the water and the form of the substrate.The results showed that the water quality in the study area were very feasible for the life of crab, with a distribution of temperature between 29 0 C -30 0 C.Salinity waters in the study area ranged from 31 to 32 ppt, and water pH value in the study site ranged from 7.2 to 7.5.Karaps wide distribution crab dominated by width exceeding 100 mm in both males and females. The proportion of carapace width of male crabs are caught with a width exceeding 100 mm is 41.7% and females at 48.3% of the total sample.Rajungan sex ratio between males and females was 0.8: 1. This shows that the male crab can fertilize more than one female crabs.
Tanjung Luar is coastal water used as a waste disposal area for Fish Landing Based (FLB) activities. However, the condition of the waters with phytoplankton as a bioindicator has never been reporting. This research aims to know Bacillariophyceae in terms of abundance, diversity, and measurement of environmental pollution variables. Methods Sampling at the study location was determined by a systematic random sampling method. Data analysis Bacillariophyceae were determined using formula abundance, diversity index, and dominance index. The index of similarity of species between sample points was determined based on the Bray-Curtis Cluster Analysis. Furthermore, the results showed an abundance of Bacillaryophyceae of 322,000 individuals / L classified as low, the diversity index of Bacillariophyceae of 2.162 classified as moderate, and a dominance index of 0.138 (without dominating species). The results showed that the highest species similarity index was between sample points II and III (57.9%), and the lowest species similarity index between sample points I and II was 23.7%. Water pollution on the waters of PPI Tanjung Luar is classified as moderate pollution level and oligotrophic fertility.
Penelitian ini bertujuan untuk mengkaji ukuran rajungan yang tertangkap, menganalisisperbandingan jumlah rajungan jantan dan betina yang tertangkap, dan menganalisiskarakteristik habitat (salinitas, suhu, pH, dan bentuk dasar substrat perairan) di daerahpenangkapan rajungandi Dusun Ujung Lombok Timur. Jenis penelitian ini adalahpenelitian diskriptif dengan menggunakan metode survai dalam pengambilan data.Parameter yang diteliti adalah parameter biologi dan ekologi rajungan. Parameterbiologi yang diamati adalah jenis kelamin, dan lebar karapas, sedangkan parameterekologi adalah suhu, salinitas, dan pH perairam serta bentuk dasar substrat. Kondisisubstrat didominasi oleh fraksi pasir diikuti oleh fraksi lumpur dan fraksi liat. Hasilpenelitian menunjukkan bahwa kualitas air di daerah penelitian sangat sangat layak bagikehidupan rajungan, dengan sebaran suhu antara 290C – 300C. Salinitas perairan didaerah penelitian berkisar dari 31 sampai 32 ppt, dan Nilai pH perairan di lokasipenelitian berkisar antara 7.2 sampai 7.5. Distribusi lebar karaps rajungan di dominasioleh lebar diatas 100 mm baik jantan maupun betina. Proporsi lebar karapas rajunganjantan yang tertangkap dengan lebar diatas 100 mm adalah sebesar 41,7% dan betinasebesar 48,3% dari total sampel penelitian. Nisbah kelamin antara rajungan jantan danbetina adalah 0,8 : 1. Hal ini menunjukkan bahwa rajungan jantan dapat membuahilebih dari satu rajungan betina.
Pandanduri Dam waters has an essential function for the community made the activities of the surrounding community inseparable from the Pandanduri Dam that made potentially quality change of the Pandanduri Dam waters. Good water quality is an important requirement for humans that made water quality research is essential to be done. Human activities will affect environmental factors such as biological parameters, especially phytoplankton, which are indicators of water quality. The aim of this study was to analyzed water quality of Pandanduri Dam through study of phytoplankton community and diversity. Sample sites were determined based on haphazard sampling method and phytoplankton data were analyzed based on the shannon-weiner diversity index. The results showed that the phytoplankton community identified in Pandanduri Dam consisted of 5 classes, 13 orders, and 31 species with species diversity index of 2,659. Based on fitoplankton diversity index value the water of Pandanduri Dam was in lightly polluted category. It is suggested to more detailed studies should be undertaken especially on species that produce toxins over a longer time scale.
Research on seagrass fishes resources condition was conducted in the intertidal zone of Ekas Bay, East Lombok. Sampling of fishes was conducted using the swept area method with beach seine. The result of this research in three station showed that the degree of fishes diversity was low. There was a strong indication that the fishes species in the research area were dominated by certain fish species. In general, the firtility of Ekas Bay coastal water was semilar with the other coastal waters, however the environmental condition mainly the low of persentage of seagrass covering in the research location was the main couse of the low diversity of seagrass fish of the area. High exploitation followed by destruction methods of exploitation can be the main causes of fish degradation habitat, mainly in the seagrass of Ekas Bay, East Lombok. Key words: fish habitat, Lombok, marine,seagrass fishs AbstrakPenelitian kondisi sumberdaya ikan padang lamun telah dilakukan di wilayah intertidal Teluk Ekas, Lombok Timur. Pengambilan sampel ikan menggunakan metode swept area dengan pukat pantai (beach seine) di tiga stasiun pengamatan menunjukkan bahwa tingkat keanekaragaman ikan di lokasi penelitian rendah. Ada indikasi yang sangat kuat bahwa dominansi suatu jenis ikan di setiap stasiun pengamatan. Secara umum, kesuburan perairan Teluk Ekas relatif sama dengan perairan lainnya, namun kondisi lingkungan terutama persentasi penutupan padang lamun yang rendah menjadi penyebab utama rendahnya keanekaragaman ikan padang lamun di lokasi penelitian. Tingkat eksploitasi yang tinggi disertai dengan cara eksploitasi yang tidak mempertimbangkan kesinambungan pemanfaatan sumberdaya menjadi penyebab rusaknya habitat ikan, khususnya padang lamun di Teluk Ekas, Lombok Timur. Kata kunci: ikan padang lamun, habitat ikan, laut, Lombok.
Abstrak: Makroalga adalah salah satu sumber daya alam yang memiliki nilai ekonomis tinggi. Keragaman makroalga kawasan daerah tropis sangat tinggi, tidak terkecuali di daerah intertidal Gili Sulat. Keberadaan komuditas ini di Gili Sulat belum banyak diketahui. Penelitian ini bertujuan mendiskripsikan keragaman spesies makroalga sebagai indikator ekologi ekosistem perairan di kawasan konservasi laut daerah Gili Sulat Lombok Timur. Pengumpulan data penelitian makroalga dengan metode kuadrat (1 x 1 m) yang disebar pada tiga stasiun pengamatan. Analisis data untuk indeks keanekaragaman spesies menggunakan indeks Shannon-Wiener, indeks keseragaman spesies menggunakan indeks Evennes, indeks dominansi menggunakan indeks Simpson dan analisis hubungan makroalga dengan faktor lingkungan menggunakan uji Korelasi Product Moment. Hasil penelitian menemukan 11 spesies makroalga, dan 7 spesies dari kelas Chlorophyceae dan 4 spesies dari kelas Phaeophyceae. Selain itu, spesies yang memiliki nilai kepadatan tertinggi adalah Halimeda opuntia sebesar 18.519 rumpun/ha. Sementara itu, hasil analisis indkes keanekaragaman spesies dari semua spesies yang temukan berada dalam kategori sedang dengan nilai pada stasiun I adalah 1,00, stasiun II adalah 1,36; dan stasiun III adalah 1,59. Selanjutnya, nilai keseragaman spesies berdasarkan hasil perhitungan diperoleh pada stasiun I adalah 0,53, stasiun II adalah 0,65 dan Stasiun III adalah 0,85. Oleh karena itu, spesies makroalga pada stasiun III memiliki tingkat keseregaman yang paling tinggi dibandingkan dua stasiun lain (I dan II) di lokasi studi. Kesimpulan dari penelitian adalah makroalga dapat menjadi indikator ekologi untuk menilai perubahan ekosistem pada kawasan konservasi laut daerah di Gili Sulat Lombok Timur Nusa Tenggara Barat.Kata kunci: Makroalga, Keanekaragaman dan Gili Sulat.Abstract: Macroalgae is one of the natural resources that has high economic value. The diversity of macroalgae in the tropics is very high, not least in the intertidal area of Gili Sulat. The existence of this community in Gili Sulat is not well known. This study aims to describe the diversity of macroalgae species as an indicator of the ecology of aquatic ecosystems in regional marine conservation areas in Gili Sulat, East Lombok. Research data collection for macroalgae using the quadratic method (1 x 1 m) spread across three observation stations. Data analysis for the species diversity index uses the Shannon-Wiener index, the species uniformity index uses the Evennes index, the dominance index uses the Simpson index and the analysis of the relationship of macroalgae with environmental factors using the Product Moment Correlation test. The results found 11 species of macroalgae, and 7 species of the class Chlorophyceae and 4 species of the class Phaeophyceae. In addition, the species that has the highest density value is Halimeda opuntia of 18,519 clumps / ha. Meanwhile, the results of the analysis of the species diversity index of all species found were in the medium category with the value at station I being 1.00, station II being 1.36; and station III is 1.59. Furthermore, the species uniformity value based on the calculation results obtained at station I is o, 53, station II is 0.65 and Station III is 0.85. Therefore, the macroalgae species at station III have the highest level of uniformity compared to the other two stations (I and II) at the study location. The conclusion from the study is that macroalgae can be an ecological indicator to assess ecosystem changes in the marine conservation area in Gili Sulat, East Lombok, West Nusa Tenggara.Keywords: Macroalgae, Diversity and Gili Sulat
Abstrak: Komunitas mangrove di kawasan Sekotong Lombok Barat telah diteliti untuk mengetahui komposisi spesies, kerapatan individu setiap spesies,dan persentase tutupannya. Total sebanyak 28 plot (kudrat) berukuran 10m x 10m dibuat pada 9 transek di lima stasiun. Foto tutupan kanopi mangrove dan parameter komposisi komunitas dianalisis menggunakan software Image dan template spreadsheet. Data kerapatan pohon dan persentase tutupan mangrove dianalisis dengan ANOVA. Persentase kesamaan antara stasiun menggunakan Biodiversity Program Version 2 berdasarkan the Bray Curtis Cluster Analysis. Komunitas mangrove di Kecamatan Sekotong Lombok Barat teridenfikasi 8 spesies, meliputi 5 genus, dan 4 famili. Rhizophora apiculata tersebar disemua transek penelitian.Transek SKTM02B memiliki kerapatan pohon tertinggi sebesar 2800 pohon/ha. Tiga transek dengan persentase tutupan tertinggi berturut-turut SKTM04T, SKTM04, dan SKTM01A. Persentase kesamaan antar stasiun sangat tinggi mencapai 82,503 -95,423%. Persentase kesamaan tertinggi (95,423%) terjadi antara stasium SKTM04 dan SKTM05.Abstract: Community of mangrove in the area of Sekotong West Lombok has been researched to know the species composition, individual density of each species, and percentage covering. Total number of 28 plots of 10 m x 10 m in size were set in 9 transects in 5 station. Photographs mangrove canopy covering and parameter of mangrove community composition were analyzed by using the software Image and template spreadsheet. ANOVA was applied for analyzing the data of mangrove tree density and percentage covering. The Bray Curtis Cluster Analysis using Biodiversity Program Version 2 was also used for analyzing the percentage similarity among station. The community of mangrove of Sekotong West Lombok consists of 8 species, 5 genera dan 4 family. Rhizophora apiculata was recorded in all transects. The highest density (2800 trees/ha) of mangrove was recorde in ransect SKTM02B.. The three transects with the highest percentage covering were SKTM04T, SKTM04, dan SKTM01A, respectively. Percentages similarity among station were very high (82,503% -95,423%). SKTM04 and SKTM05 were the two station with the highest percentage similarity (95,423%).
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